Cluster outlet for electric lamps



Jan. '17, 1928. 1,656,725

. F. CHADWICK onus-ran OUTLET FOR- ELECTRIC umPs Filed Dec. 10. 1926 Patented Jan. 17, 1928.

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Application filedDecember 10, 1926. Serial No. 153,863.

The invention relates to improvements in cluster -outlets for electric lamps, consisting I means for securing the upper section and lamp shadeto the lower-section, and pivoted adjustment devices on said bracket, to m which aresecured the nipples forthe lamp sockets. 1 I

The principal object of the invention is to provide a cluster outlet having means for the adjustment of the angle of the lamps, T and another important object is tomaterially reduce the number of parts forming such a structure.

A further object is to provide means for the combined purpose of securing the upper 7 section of the cluster outlet to the lower section thereof and. for securing the usual lamp shade in a single operation.

Another object is to provide a device of the class specified which will be simple,

durable, eflicient, and inexpensive to manufacture.

These, together, with other objects, may be attained by the construction, combination, and arrangement of the parts as will be hereinafter more fully described, illus trated in the accompanying drawings, and

ascertained in the claim hereunto annexed.

Referring to the drawing:

Figure 1 is a front elevation of the improved cluster outlet;

Figure 2 is a cross-sectional front elevation of Figure 1 constructed in accordance with this invention;

Figure 3 is a cross-sectional elevation of the same taken on the line 33 in Fig ure 1;

Figure 4: is a top View of the cluster outlet with the upper section of the shell removed;

Figure 5 is a bracket unit;

Figure 6 is a front or face view of the adjustment device;

Figure 7 is a side view of the adjustment device; and,

Figure 8 is a top view of the adjustment device.

Similar reference numerals refer to corresponding parts throughout the several views.

This invention relates perspective view of the particularly to clustcr outlets of household table and floor (piano) lamps. The current translating Wires are usually *ledthrough the core of i the pedestal or column of the lamp, mount ed upon which isthe cluster outlet, thesubject-matter of this invention, andfrom within this cluster outlet said wires are distributedto the lamp sockets. These cluster outlets are in the form of a" shell comprised of a lowersection 10 and anupper section 11., which, whenin use, are united. The usual lamp shade is supported upon the upper sec tion 11, the web or spokes of the lamp shadeframe being shown on the drawing in dotted lines indicated :at 1 2.

Referring to the invention. In the bot tom of the lower section 10 is an opening 13 to receive the usual nipple on the top of the lamp pedestal. In the interior of this section 10 is a bracket unit comprised of a perpendicularly disposed ear 14, a horizontally disposed foot plate 15 formed as one with the ear by bending the material, anda horizontally disposed arm 16 formed. by cutting the material of the ear 14: to the required form and bending outwardly. the cut-out portion.

The foot plate 15 is mounted upon the bottom ofthe lower section 10 and the entire bracket unit is secured in place by the rivet 17, or other suitable" device. In this foot plate a hole is formed and the material about the hole is drawn upwardly and threaded on its interior as at 18 to receive the lamp pedestal nipple. Thus when the bracket unit is tightened by screwing down on said nipple the lower shell section 10 is made fast to the lamp pedestal.

On the lateral portions of the car 14: are mounted the pivoted adjustment devices. These devices are each comprised of two .fiat circular plates 19 and20 disposed at substantially right angles and united by an elbowed neck portion 21 formed as one therewith. The plates 19 are pivoted to the said lateral portions of the car 14 by the bolts 22, or by rivets, as preferred. Around the openings for the passage of said bolts or rivets in each of these plates is an annular plurality of rounded protuberances 23 which may be formed, as for example, by indenting the opposite side of the plates. These protuberances engage corresponding recesses 24: in the ear 14, which may be formed by indenting the latter.

The plates 20 are provided with threaded nipples 25, to which are adapted to be secured the usual electric lam sockets, and through which extend the fee wires to these sockets. These nipples extend through slots 26 in the lower shell section 10. The aivoted adjustment devices, together with the hi ples 25, by pressing on the latter, may e rotated relative to the ear 14 for the purpose of adjusting the angle of the electric lamps. hen the desiredangle is obtained, the specific adjustment is maintained by the resistanceot the engagement of the protuberances 23 with the recesses 24 on the ear and a spring washer 22 interposed be tween an outer washer 22 and the plate 19. While adjusting, the spring washer 22 gives to allow the protuberances to leave the recesses and pass over the surface of the ear.

To the arm 16 is secured a perpendicularly disposed stud bolt 27, This bolt extends through an opening in the top of the upper shell section 11, through the lamp shade frame 12, both said section and shade being made rigid by screwing down the usual ornamental cap nut 28.

Therehas thus been roduced a simple and useful device of the c ass described and for the purpose specified, and now having fully described the invention and the manner in which it is to be performed in such manner that any person skilled in the art to which it appertains could make the same, what is claimed as new,is:-

In a cluster outlet, a shell, a bracket unit in the shell com )rised of a foot plate secured to the bottom 0 it the latter and a perpendicw lar ear extending from the foot plate and an arm extending: horizontally from the ear,

said foot plate being provided with; means for attachment to the pedestal of a lamp, adjustment deviceson said ear adapted for adjustment to varying angles, lamp socket nipples secured to said adjustment devices 

